"""
1450. Number of Students Doing Homework at a Given Time

Given two integer arrays startTime and endTime and given an integer queryTime.

The ith student started doing their homework at the time startTime[i] and finished it at time endTime[i].

Return the number of students doing their homework at time queryTime. More formally,
return the number of students where queryTime lays in the interval [startTime[i], endTime[i]] inclusive.

Example 1:

    Input: startTime = [1,2,3], endTime = [3,2,7], queryTime = 4
    Output: 1
    Explanation: We have 3 students where:
        The first student started doing homework at time 1 and finished at time 3 and wasn't doing anything at time 4.
        The second student started doing homework at time 2 and finished at time 2 and also wasn't doing anything at time 4.
        The third student started doing homework at time 3 and finished at time 7 and was the only student doing homework at time 4.

Example 2:
    Input: startTime = [4], endTime = [4], queryTime = 4
    Output: 1
    Explanation: The only student was doing their homework at the queryTime.

Example 3:
    Input: startTime = [4], endTime = [4], queryTime = 5
    Output: 0

Example 4:
    Input: startTime = [1,1,1,1], endTime = [1,3,2,4], queryTime = 7
    Output: 0

Example 5:
    Input: startTime = [9,8,7,6,5,4,3,2,1], endTime = [10,10,10,10,10,10,10,10,10], queryTime = 5
    Output: 5

Constraints:
    startTime.length == endTime.length
    1 <= startTime.length <= 100
    1 <= startTime[i] <= endTime[i] <= 1000
    1 <= queryTime <= 1000

"""


class Solution(object):
    def busyStudent(self, startTime, endTime, queryTime):
        """
        :type startTime: List[int]
        :type endTime: List[int]
        :type queryTime: int
        :rtype: int
        """

        result = 0
        for i in range(len(startTime)):
            if startTime[i] <= queryTime <= endTime[i]:
                result += 1

        return result


if __name__ == '__main__':
    s = Solution()
    print(s.busyStudent(startTime=[1, 2, 3], endTime=[3, 2, 7], queryTime=4))
    print(s.busyStudent(startTime=[4], endTime=[4], queryTime=4))
    print(
        s.busyStudent(startTime=[9, 8, 7, 6, 5, 4, 3, 2, 1], endTime=[10, 10, 10, 10, 10, 10, 10, 10, 10], queryTime=5))
